One band from high school? Tough call.
Iron Maiden was probably my all time favorite band from 1981-1987.
I cannot think of any bands I listened to in high school where I can say I love all of their work. Bands I was listening to in high school (84-87 years) include the typical metal staples Ozzy, Sabbath, AC/DC, Iron Maiden, Judas Priest, Metallica, Megadeth, Slayer (which was a surreal experience in the early to mid 80s). I would say that Slayer was the most consistent of the "big 4", but again they were not perfect and have had a few mediocre albums since their emergence in the early 1980's. Iron Maiden's sound changed quite a bit from 1981-1987, but that Number of the Beast, Piece of Mind, Powerslave phase was awesome. (Powerslave was the only album of that trilogy that came out when I was in high school)
If I had to pick the *albums* released in the 84-87 timeframe that have probably gotten the most play since buying them during my high school days (in no particular order)
Iron Maiden:
Powerslave (the album cover had so many Easter eggs-Derek Riggs rules)
Slayer:
Reign in Blood (flip the cassette over for endless looping!)
Hell Awaits (this album cover actually intimidated me when it came out-it just looked scary)
Metallica:
Ride The Lightning (Creeping Death inspired my pinball initials DIE)
Master of Puppets (amazing stuff. The opening 4 notes on the title song are instantly recognizable)
Megadeth:
Peace Sells But Who's Buying (Loved the album cover and title song. The cover reminds me of the 2 Minutes to Midnight picture disc I had.
Anthrax:
Among the Living (great riffs. Honestly had never heard the word "mosh" before this album). Funny thing is my mom *hates* this tour shirt. Never mind all the skulls, inverted crosses, skeletons and pentagrams on all the other tour shirts, Randall Flagg creeps her out. (I love my mom, so I don't wear that shirt around her).
There are a ton of great albums in this timeframe from so many bands, Death, Kreator, Celtic Frost, Sepultura, Venom and on and on.
Fun topic.